Activation Energy and Catalyst in Chemical Reactions

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12 Questions

What is the role of enzymes in chemical reactions?

Speeding up specific chemical reactions

Where does the substrate bind to the enzyme during a reaction?

Active site

What is the term used for the reactant in biochemical reactions?

Substrate

What happens to the product after it is formed in an enzyme-catalyzed reaction?

It dissociates and the enzyme is free to bind another substrate

In the context of activation energy, what does Ea represent?

Activation energy of the reaction

What is the main factor that determines the speed of reaction in the Arrhenius equation?

Temperature

What is the minimum energy required to start a chemical reaction called?

Activation energy

Which of the following statements about collision theory is true?

Molecules must collide in the correct orientation with kinetic energy greater than the activation energy for a reaction to occur.

What is the transition state in a chemical reaction?

A high energy, unstable state where the molecules are contorted or deformed.

What is the role of a catalyst in a chemical reaction?

To lower the activation energy of the reaction.

Which of the following statements about catalysts is true?

Catalysts are not consumed during the course of a chemical reaction.

Which of the following energy types must molecules possess to undergo a chemical reaction?

Both kinetic and potential energy

Learn about activation energy in chemical reactions, which is the minimum energy required for a reaction to start. Discover how molecules collide and utilize kinetic energy to initiate reactions. Explore the role of catalysts in lowering activation energy.

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